The CY7C024AV/025AV/026AV consist of an array of 4K, 8K, and 16K words of 16 bits each of dual-port RAM cells, IO and address lines, and control signals (CE, OE, R/W). These control pins permit independent access for reads or writes to any location in memory. To handle simultaneous writes and reads to the same location, a BUSY pin is provided on each port. Two Interrupt (INT) pins can be used for port to port communication. Two Semaphore (SEM) control pins are used for allocating shared resources. With the M/S pin, the devices can function as a master (BUSY pins are outputs) or as a slave (BUSY pins are inputs). They also have an automatic power down feature controlled by CE. Each port has its own output enable control (OE), which enables data to be read from the device. For a complete list of related resources, click here.